(88710) 2001 SL9

Near-Earth asteroid October 2019 yes #FFC2E0 (88710) 2001 SL 9 Orbit of 88710.gif Orbit of 2001 SL 9 88710 (2001 SL9) 2088710 7 April 2016http://www.johnstonsarchive.net/astro/astmoons/am-88710.html (88710) 2001 SL9 Johnston Archive September 1, 2005 26 December 2013 Johnston, Robert NEAT 18 September 2001 Palomar Obs. 13 January 2016 (JD 2457400.5) 22318 days (61.10 yr) 0 1.3480 AU Gm on on 0.77471 AU Gm on 1.0613 AU Gm on 0.27006 1.09 yr (399.37 d) 21.900° 202.86° 0.90142 ms / day 239.06° 329.30° 0.197987 AU Gm on 3.64009 AU Gm on 1 1 km mi onhttp://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2002aste.conf..289M&db_key=AST Asteroids III Asteroids Do Have Satellites 2002 2002aste.book..289M 109 mt 1.8 g/cm3 0.02565 mm/s2http://phl.upr.edu/projects/habitable-exoplanets-catalog/calculators HEC: Exoplanets Calculator University of Puerto Rico Planetary Habitability Laboratory 27 December 2013 5 September 2019 https://web.archive.org/web/20190905010034/http://phl.upr.edu/projects/habitable-exoplanets-catalog/calculators dead 0.05116 mm/s 2.4004 h d on on 2.40035±0.00005 hourshttp://www.cbat.eps.harvard.edu/iauc/07700/07742.html IAUC 7742: 2001fd; 2001fe; 2001 SL_9 Harvard University International Astronomical Union November 3, 2001 27 December 2013 Green, Daniel 0.16 230-303 K (-43-30°C) 17.6 (88710) 2001 SL 9 is a sub-kilometer asteroid and binary system, classified as a near-Earth object of Apollo group discovered by NEAT at Palomar Observatory on 18 September 2001. It measures approximately 960 meters in diameter, while its 2001-discovered minor-planet moon has an estimated diameter of 200 meters based on a secondary to primary size ratio of 0.28. Near-Earth asteroid Although 2001 SL 9 is classified as a near-Earth object, it does not pose any threats. It has never, nor will it ever in the next century, come closer than 0.1 AU km on flip from Earth or Venus. However, the asteroid would make a good target for a spacecraft flyby, as a flyby to 2001 SL 9 would only require a delta-v of 5.4 km/s.http://echo.jpl.nasa.gov/~lance/binary.neas.2004dec14.html https://web.archive.org/web/20200920050748/https://echo.jpl.nasa.gov/~lance/binary.neas.2004dec14.html dead September 20, 2020 BINARY NEAR-EARTH ASTEROIDS DETECTED BY RADAR Jet Propulsion Laboratory December 14, 2004 30 December 2013 Benner, Lance Moon 2001 SL 9 has one minor-planet moon. It was discovered from lightcurve observations made by Czech astronomer Petr Pravec and collaborators. This moon is approximately 200 m ft on in diameter. Its semi-major axis is 1.6 km mi on and its orbital period is 16.4 hours. References External links Lightcurve plot of (88710) 2001 SL9, Palmer Divide Observatory, B. D. Warner (2001) Asteroids with Satellites, Robert Johnston, johnstonsarchive.net Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (85001)-(90000) – Minor Planet Center 88710 88710 2001SL9 88710 (88710) 2001 SL 9 088710 088710 088710 088710 20010918